干旱区生态环境知识资源中心(Arid): Late Campanian-Maastrichtian foraminiferal biostratigraphy and paleoecology at Wadi Tarfa (North Eastern Desert, Egypt)

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DOI	10.1016/j.marmicro.2021.102050
	Late Campanian-Maastrichtian foraminiferal biostratigraphy and paleoecology at Wadi Tarfa (North Eastern Desert, Egypt)
	Bazeen, Youssef S.; El-Sheikh, Islam; Moneer, El Sayed M.
通讯作者	Bazeen, YS (corresponding author), Al Azhar Univ, Fac Sci, Geol Dept, POB 11884, Cairo, Egypt.
来源期刊	MARINE MICROPALEONTOLOGY
ISSN	0377-8398
EISSN	1872-6186
出版年	2021
卷号	169
英文摘要	The upper Campanian-Maastrichtian (from Globotruncanella havanensis to Plummerita hantkeninoides zones) foraminiferal assemblages at the Wadi Tarfa section in the Egyptian North Eastern Desert are studied to infer paleoenvironments and relative sea-level changes. The multivariate R-mode hierarchical clustering and the Q-mode Nonmetric Multi-Dimensional Scaling (NMDS) of the benthic foraminiferal dataset have been attempted to quantify the vertical variations in paleobathymetry, oxygenation, and trophic conditions. The inferred foraminiferal-based sea-level curve reveals paleodepth fluctuations ranging from middle neritic to upper bathyal and distinguishes five 3rd order sequences, two in the upper Campanian and three in the Maastrichtian. The development of the inferred relative sea-level curve expresses greater control of the eustasy. Also, the regional impact of the Syrian Arc Orogeny (SAO) subordinately led to amalgamation and repositioning of some sea-level events. The lowermost part (Gl. havanensis Zone) was deposited under stressed, low oxygenated, weakly eutrophic bottom-water conditions. However, well-oxygenated oligotrophic conditions occurred around the level of the Campanian/Maastrichtian (C/M) boundary, as inferred from the predominance of heavily calcified epibenthic oxic species. We attributed this oligotrophy to the oceanic circulation change and the accompanying climatic cooling experienced at that time. The remainder of the early Maastrichtian through late Maastrichtian experienced an environmental shift toward mesotrophic conditions without considerable oxygenation change. The latest Maastrichtian, however, reveals low-oxic mesotrophic-weakly eutrophic bottom-water conditions, which is likely owed to the Deccan volcanism induced food detritus enrichment.
英文关键词	Benthic and planktonic foraminifera Trophic conditions Bottom-water oxygenation NMDS Sequence stratigraphy C-M transition oligotrophy
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000706498500003
WOS关键词	BENTHIC FORAMINIFERA ; SEA-LEVEL ; SEQUENCE STRATIGRAPHY ; WESTERN DESERT ; PLANKTIC FORAMINIFERA ; NEW-JERSEY ; SUCCESSION ; RECORD ; PRODUCTIVITY ; TRANSITION
WOS类目	Paleontology
WOS研究方向	Paleontology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364144
作者单位	[Bazeen, Youssef S.; Moneer, El Sayed M.] Al Azhar Univ, Fac Sci, Geol Dept, POB 11884, Cairo, Egypt; [El-Sheikh, Islam] Al Azhar Univ, Fac Sci, Geol Dept, Assiut Branch, POB 71524, Assiut, Egypt
推荐引用方式 GB/T 7714	Bazeen, Youssef S.,El-Sheikh, Islam,Moneer, El Sayed M.. Late Campanian-Maastrichtian foraminiferal biostratigraphy and paleoecology at Wadi Tarfa (North Eastern Desert, Egypt)[J],2021,169.
APA	Bazeen, Youssef S.,El-Sheikh, Islam,&Moneer, El Sayed M..(2021).Late Campanian-Maastrichtian foraminiferal biostratigraphy and paleoecology at Wadi Tarfa (North Eastern Desert, Egypt).MARINE MICROPALEONTOLOGY,169.
MLA	Bazeen, Youssef S.,et al."Late Campanian-Maastrichtian foraminiferal biostratigraphy and paleoecology at Wadi Tarfa (North Eastern Desert, Egypt)".MARINE MICROPALEONTOLOGY 169(2021).